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Tuesday, November 22nd, 2022
| Time | Event | ||||||||
| 2:10a | [Crustacea • 2022] Gurumon gurumayum • A New Genus and New Species of Freshwater Crab (Decapoda: Potamidae: Potamiscinae) from Arunachal Pradesh, northeastern India
ABSTRACT A new genus and new species of potamid crab, Gurumon gurumayum gen. et sp. nov., are described from the Arunachal Pradesh State of northeastern India. Gurumon gen. nov. has affinities with Abormon Mitra, Pati & Ng, 2021, Pararanguna Dai & Chen, 1985, and some species of Potamiscus Alcock, 1909, but the new genus can easily be differentiated from them mainly by its low external orbital angle, the relatively stouter exopod of the third maxilliped, and the relatively broader male pleonal somite 6. Their male first gonopods are also different from each other. Counting Gurumon gurumayum gen. et sp. nov., India is currently known for ten genera and 24 species of potamiscine freshwater crabs, and Arunachal Pradesh for eight genera and 11 species of these crabs. The current nomenclatural problems with Potamiscus are also discussed. Keywords: taxonomy, Crustacea, Potamiscinae, nomenclature, Potamiscus
Taxonomy Phylum Arthropoda von Siebold, 1848 Subphylum Crustacea Brünnich, 1772 Class Malacostraca Latreille, 1802 Order Decapoda Latreille, 1802 Infraorder Brachyura Latreille, 1802 Superfamily Potamoidea Ortmann, 1896 Family Potamidae Ortmann, 1896 Subfamily Potamiscinae Bott, 1970 (sensu Yeo & Ng 2004) Genus Gurumon gen. nov. Type species: Gurumon gurumayum sp. nov., by present designation; gender neuter. Diagnosis: Small adult size (adult CW < 15 mm). Carapace transversely ovate; dorsal surface generally smooth, glabrous, conspicuously arched; epigastric cristae low, visible as 2 broad protuberances; postorbital cristae indiscernible; external orbital angle indistinct, low; epibranchial tooth very low; cervical grooves barely visible (Figs 1A–B, 2A, E, H, 3A). Epistome posterior margin with well-developed, triangular medial tooth (Fig. 1B). Antennules short, folded in longitudinally broad fossae; antennae vestigial (Fig. 1B). Mandibular palp 3 segmented; terminal segment simple, undivided (Fig. 2B). First, second maxillipeds each with short flagellum on exopod; third maxilliped exopod relatively stout, tapered, reaching beyond anterolateral angle of ischium, completely lacking flagellum (Figs 1B–C, 3B). Chelipeds smooth, glabrous (Figs 1A, C, 2A, E, H). Ambulatory legs glabrous, slender; merus (P2–P5) elongated (Figs 1A, C, 2A, E, H). Male s2/s3 deep, reaching lateral margins; s3/s4 indiscernible; s7/s8 lacking transverse ridge (Figs 1C, 2C–D, 3C). Male pleon broad, with distinctly broader pleonal somite 6 (Figs 1C, 3C–D). Male telson tongue-shaped, with concave lateral margins (Figs 1C, 3C–D). G1 stout, long; flexible zone small; terminal segment stout, cylindrical, long, ca 0.6 × combined length of flexible zone and subterminal segment, curved outwards, dorsal flap absent; subterminal segment stout (Figs 2C, 3E, 4A–B). G2 longer than G1; distal segment long, ca 0.4 × as long as basal segment (Figs 2C, 3F, 4C). Vulvae on S6 located apart from each other (VD/SW = ca 0.25), open mesially, subovate, large (Fig. 2G). Etymology: The genus is named in the honour of Dr Shantabala Devi Gurumayum for her extensive work in aquatic biology, in arbitrary combination with the genus name Potamon Savigny, 1816. The gender of the generic name is neuter. Gurumon gurumayum sp. nov. Etymology: The species epithet is the family name of Dr Shantabala Devi Gurumayum, an Indian zoologist who kindly collected and provided the crab specimens for the present study. The species name is treated here as a Latin noun in apposition. 
Sameer K. Pati. 2022. Gurumon gurumayum, A New Genus and New Species of Freshwater Crab (Decapoda: Brachyura: Potamidae) from Arunachal Pradesh, northeastern India. European Journal of Taxonomy. 847(1), 28–45. DOI: 10.5852/ejt.2022.847.1979   | ||||||||
| 2:10a | [Ichthyology • 2022] Oxyurichthys omanensis • A New Eyebrow Goby (Gobiiformes: Gobiidae) from Oman
Abstract Oxyurichthys omanensis sp. nov. is described as a new gobiid species from a mudflat/estuary habitat in northern Oman. The new species is diagnosed among all currently recognised congeners by the following combination of character states: elongate tentacle on dorsoposterior surface of the eye; nape with well-developed membranous crest; nape scaled to above anterior half of opercle along sides with naked median along membranous crest, scales never reaching to above preopercle; opercle and pectoral base naked; scales ctenoid laterally on trunk posterior to base of second dorsal fin 3rd element; lateral scale rows 51–58, usually 51–56; transverse forward scale rows 23–29, usually 24–28; transverse rearward scale rows 14–16, usually 14–15; upper lip usually constricted at premaxillary symphysis; infraorbital transverse papillae row 2 reaching eye margin dorsally and markedly short of longitudinal row d ventrally; additional short transverse papillae rows between rows 2 and 3i present; dark saddle present over caudal peduncle; snout length 34.9–45.4% HL; second dorsal-fin longest ray 1.1–1.6 head depth; pelvic fin always reaching or passing anal-fin origin. The K2P genetic distances (%) in the mtDNA COI barcode region between O. omanensis and the other Oxyurichthys species were all high (11.2–30.6%) with the K2P nearest neighbor distance of 11.2% to O. cornutus and O. ophthalmonema. Keywords: Pisces, Endemic, Gobioidei, Gobionellinae, Systematics, DNA Barcoding, Oman Sea basin
Oxyurichthys omanensis sp. nov. Fatah Zarei, Saud M. Al Jufaili and Hamid Reza Esmaeili. 2022. Oxyurichthys omanensis sp. nov., A New Eyebrow Goby (Teleostei: Gobiidae) from Oman. Zootaxa. 5182(4);361-376. DOI: 10.11646/zootaxa.5182.4.3 | ||||||||
| 2:13a | [Herpetology • 2022] Diploderma daochengense, D. xinlongense & D. kangdingense • Three New Species of Diploderma Hallowell, 1861 (Reptilia: Agamidae) from the Shaluli Mountains in Western Sichuan, China
Abstract In recent years, taxonomic research of the genus Diploderma has made great progress, but there are still areas lacking relevant investigations. During 2020–2021, we carried out survey of reptile diversity in and around the Shaluli Mountains and collected some specimens of Diploderma. Of which, based on systematics inferred from mitochondrial ND2 gene sequence and morphological data, three new species were recognized: Diploderma daochengense sp. nov. from the Shuiluo River and Muli River valleys in southeastern Daocheng County, D. xinlongense sp. nov. from the upper-middle valleys of the Yalong River in Xinlong County, and D. kangdingense sp. nov. from the Yalong River middle valley and Liqiu River valley. Specifically, these three new species formed three monophyletic lineages with strongly supported and nested into the subclade I of the Bayesian and Maximum Likelihood trees. The uncorrected mean genetic distance between these new species and their closely related species was 4.3% (D. xinlongense sp. nov. vs. D. panchi), 3.4% (D. daochengense sp. nov. vs. D. yulongense) and 5.5% (D. kangdingense sp. nov. vs. D. bowoense), higher than many pairs of species of Diploderma. With respect to the morphology, D. daochengense sp. nov. can be easily diagnosed from D. yulongense by having smooth upper edge of the dorsolateral stripes, cyan or dark olive green to yellow gular spots in both sexes and light yellow or white ventrolateral body in males; D. xinlongense sp. nov. can be easily diagnosed from D. panchi by having cyan gular spot in both sexes; D. kangdingense sp. nov. can be easily diagnosed from D. bowoense by having more T4S 20–25 (average 23), more F4S 16–20 (average 17) and yellow to light yellow ventrolateral body, yellow gular spot present in males. To date, the number of species of the genus Diploderma has increased to 40, of which 37 species have been known in China. Keywords: Ganzi; taxonomy; Hengduan Mountains; Mountain Dragons; RGB color model
Diploderma daochengense sp. nov. Japalura flaviceps Zhao et al., 1999: 111–115 in part.; Diploderma yulongense Shu et al., 2021: 259–264. Suggested English name: Daocheng Mountain Lizard Suggested Chinese name: 稻城攀蜥 (dào chéng pān xī) Etymology: The specific epithet of “Daocheng” refers to a county name of Sichuan, and the new species is found on its southeastern edge. Diploderma xinlongense sp. nov. Suggested English name: Xinlong Mountain Lizard Suggested Chinese name: 新龙攀蜥 (xīn lóng pān xī) Etymology: The specific epithet of “Xinlong” refers to the Xinlong County where the new species was discovered. Diploderma kangdingense sp. nov. Japalura flaviceps Zhao et al., 1999: 111–115 in part; Zhao, 2003: 84 in part; Cai et al., 2018 in part. Suggested English name: Kangding Mountain Lizard Suggested Chinese name: 康定攀蜥 (kāng dìng pān xī) Etymology: Kangding City is the capital of Ganzi Tibetan Autonomous Prefecture, which is located in the east of Ganzi in Sichuan Province. The specific epithet refers to the Kangding City where the new species was discovered. Bo Cai, Meihua Zhang, Jing Li, Simeng Du, Feng Xie, Mian Hou, Huaming Zhou and Jianping Jiang. 2022. Three New Species of Diploderma Hallowell, 1861 (Reptilia: Squamata: Agamidae) from the Shaluli Mountains in Western Sichuan, China. Asian Herpetological Research. 13(4); 205-224. DOI: 10.16373/j.cnki.ahr.220040 | ||||||||
| 10:54a | [Herpetology • 2022] Afroedura pundomontana & A. otjihipa • Rock Island Melody Remastered: Two New Species in the Afroedura bogerti Loveridge, 1944 Group (Squamata: Gekkonidae) from Angola and Namibia
Abstract Newly collected material from northern Namibia’s Otjihipa Mountains and west-central Angola allowed us to revisit the Afroedura bogerti Loveridge, 1944 group. The employment of additional gene markers, including nuclear markers, allowed us to identify two new species in the group and infer species boundaries and potential speciation events in Afroedura from southwestern Africa. The new Namibian material is recovered as a sister species to A. donveae, from which it differs mostly by the colour of the iris (copper versus black) and dorsal colouration. Material from the first elevational gradient of the escarpment in Benguela Province, Angola was found to be more closely related to A. bogerti than A. wulfhaackei. The differences between these two species are more subtle, although the new species exhibits higher mid-body scale rows (79.5 versus 74.8), different dorsal colouration and supranasal scales always in contact (versus 57% in contact). Key Words: endemism, flat geckos, Gekkonidae, Reptilia, speciation,
Afroedura pundomontana sp. nov. Bocoio Flat Gecko (English) Osga-achatada do Bocoio (Portuguese) Note: According to Branch et al. (2021), historical material from near Bocoio in Benguela Province, Angola clustered morphologically with A. wulfhaackei. However, due to the occurrence at lower elevations and being isolated from other known populations of Afroedura it was suggested that the status of this population required further investigation (Branch et al. 2021). Newly-collected material allowed for its re-assessment within a wider phylogenetic framework, and it was determined that it represented a novel lineage, related to A. bogerti and not A. wulfhaackei, as initially hypothesised. It is therefore described below as a new species. Diagnosis: A member of the greater ‘transvaalica’ group, possessing two pairs of enlarged scansors per digit, and a strongly verticillate and flattened tail (Jacobsen et al. 2014). As part of the A. bogerti group it differs from other members of the ‘transvaalica’ group by having 78–82 midbody scale rows (versus 97–102 in A. gorongosa, 113–120 in A. loveridgei, 102–119 in A. transvaalica); and rostral excluded from the nostril (in contact in A. gorongosa) [Note: in Branch et al. (2021) it was incorrectly recorded that the rostral is in contact with the nostril in the A. bogerti-group]; with the supranasals always being in contact (separated by 1–3 granules in A. gorongosa; always in broad contact in A. loveridgei; usually in broad contact in A. transvaalica ~ 3–18%); and in having 13–15 scales between the anterior borders of the eyes (19–22 in A. gorongosa; 15–19 in A. loveridgei; 15–20 in A. transvaalica) (comparative data fide Branch et al. 2017, 2021). .... Etymology: The new species is named in reference to the area where it was found. The region lies on top of a ridge known as Morro do Pundo that translates to the ‘Hills’ or ‘Mountain’ of the Baboons. The name thus comprises two parts: pundo (= baboon) and montana (= mountain).
Afroedura otjihipa sp. nov. Otjihipa Flat Gecko (English) Otjihipa Platgeitjie (Afrikaans) Diagnosis: A member of the greater ‘transvaalica’ group as it possesses two pairs of enlarged scansors per digit and a strongly verticillate and flattened tail (Jacobsen et al. 2014). Part of the A. bogerti group which differs from other members of the ‘transvaalica’ group by having less than 72 mid-body scale rows (vs. 97–102 in A. gorongosa, 113–120 in A. loveridgei, 102–119 in A. transvaalica); rostral excluded from the nostril (in contact in A. gorongosa); supranasals always in contact (separated by 1–3 granules in A. gorongosa; always in broad contact in A. loveridgei; usually in broad contact in A. transvaalica ~ 3–18%); and 15–16 scales between anterior borders of the eyes (19–22 in A. gorongosa, 15–19 in A. loveridgei, 15–20 in A. transvaalica) (comparative data from Branch et al. 2017, 2021). Etymology: The new species is named in reference to the area it was collected, namely Otjihipa Mountains in northern Namibia. 
 Werner Conradie, Andreas Schmitz, Javier Lobón-Rovira, François S. Becker, Pedro Vaz Pinto and Morgan L. Hauptfleisch. 2022. Rock Island Melody Remastered: Two New Species in the Afroedura bogerti Loveridge, 1944 Group from Angola and Namibia. Zoosystematics and Evolution. 98(2): 435-453. DOI: 10.3897/zse.98.86299   Resumo: O material recém-colectado nas montanhas Otjihipa do norte da Namíbia e no centro-oeste de Angola permitiu-nos revisitar o grupo Afroedura bogerti Loveridge, 1944. O emprego de marcadores genéticos adicionais, incluindo marcadores nucleares, permitiu-nos identificar duas novas espécies no grupo e inferir limites para separar as espécies e potenciais eventos de especiação nos Afroedura do sudoeste Africano. O novo material da Namíbia é recuperado como espécie mais próxima de A. donveae, do qual difere sobretudo pela cor da iris (acobreada ao invés de negra) e pela coloração dorsal. Ao passo que o material obtido no primeiro gradiente topográfico da escarpa na província de Benguela, Angola, revelou ser mais relacionado com A. bogerti do que com A. wulfhaackei. As diferenças entre estas duas espécies são mais subtis, muito embora as novas espécies axibam maior número de escamas a meio do corpo (79.5 em vez de 74.8), diferente coloração dorsal e escamas supranasais sempre em contacto (em vez de apenas em contacto em 57%). Palavras-chave: endemismo, especiação, Gekkonidae, Osga-achatada, Reptilia |
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